solar vacuum tube -Solar Vacuum Tube – Solar Heating with vacuum tube collectors

May 31, 2012 – 6:22 am ** – Demonstration Solar vacuum tube. Solar heating with vacuum tubes. Ideal for high temperature or solar water heating in winter. Video Rating: 4 / 5 ** This is a preview of a pipe vacuum solar 5 ft evacuated I will use in a large tank. These tubes are very efficient and work by absorbing sunlight and retain heat

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  1. 31 Responses to “solar vacuum tube -Solar Vacuum Tube – Solar Heating with vacuum tube collectors”

  2. Fact the arctic reagan has very little to no none zilch sun light during the winter
    t o m… b e a r d o n has a better one

    By ivyinetbiz on May 31, 2012

  3. I guess you wouldn’t want a hail storm with this installed.

    By TRKRTV on May 31, 2012

  4. how effective are solar vacuum tubes in cloudy weather i.e. in defused sunlight

    By ss7406 on May 31, 2012

  5. stuck on stupid? have no fear some deranged stress monkey wants to play with you on your time with this.

    By john29302 on May 31, 2012

  6. How much does this cost? Where do you get it?

    By purity4all on May 31, 2012

  7. I wonder how helpful this would be for people in arctic tundra conditions.

    By ZebbMassiv on May 31, 2012

  8. The tubes look like they work great. Why do you think there isn’t more people installing them on their homes than there is now? Do you think that some people don’t want to put them on their homes because of their looks on the roofs and do you think that maybe if someone came up with another option or design for using the tubes that wouldn’t mess with the people’s looks of their roofs would be something your interested in taking a look at and maybe testing yourself?

    By KRBetchel on May 31, 2012

  9. I’m curious what kind of pressure these can take up to? Ideally I’d like to do about a 6ft solar trough collector, a vacuum tube into a steam engine, then to a condenser and dump back into a loop. On one of your past videos, you essentially did this with a garden hose and a steel galvanized pipe, however the pressure was only moderately strong. At 250f you’re around 30psi from what I can tell, and at 300f you’re in the area of 67psi. Obviously it starts going up at a decent rate.

    By 20YrBillionaire on May 31, 2012

  10. These are US made ,I believe.

    By fakemadereal on May 31, 2012

  11. I must admit this concept is new to me but I just had a thought, if you connected this to a steam engine do you think it could possibly be more efficient than solar cells?
    Or maybe a stirling engine would be better because it could still run even if the water has stopped boiling.

    By repawnd on May 31, 2012

  12. Jimmy carter actually had them installed on the white house.Ronald Reagan did away with that.
    the vacuum tube is also omnidirectional so it only needs to point south and it collects heat throughout the day does not need to be adjusted for sun position

    By decycle1 on May 31, 2012

  13. It would be nice to somehow eliminate the need for a solar tracker. maybe with Fresnel lenses all around in small enough strips, on a clear square box around the Vacuum tube? Maybe it can stay horizontal and sun will always be concentrated somewhere on the tube in that moment of day but not everywhere? One less moving part is always better to me.

    By luc59457 on May 31, 2012

  14. abolutely! In fact many solar hot water systems use evacuated tubes (google solar hot water system evacuated tubes). It’s definitely a more efficient way of harvesting heat energy from the sun.

    By dismutased on May 31, 2012

  15. ignore that, it wouldn’t work . needs the glass on the outside. duh!! : /

    By rainbowsalads on May 31, 2012

  16. CryotechFlex make vacuum piping, its chrome but could be painted black to shine a fresnel lens or trough mirror on. that would be cool to try out. (counts pennies in jar).

    By rainbowsalads on May 31, 2012

  17. Thanks for your reply. Would be great if they made these as an actual vacuum pipe then water could flow through. Although it would be possible to use a trough mirror if the vacum tube was outside the focal point so it is not so harsh. otherwise yes it would probably explode. lol : P

    By rainbowsalads on May 31, 2012

  18. I think the tube would blow unless water was moving pretty fast. Most troughs use metal pipe.

    By screamingservers on May 31, 2012

  19. hi dan, can you get them with it being open at both ends,and longer. i would like to use this on a parabolic trough.

    By mrgreenbeans on May 31, 2012

  20. Its the probing by the aliens Dan is scared of, or is he?

    By CncObsession on May 31, 2012

  21. If they were “smart”, they wouldnt have used our food grain for fuel. Now food and gas will be more expensive.

    By CncObsession on May 31, 2012

  22. You could make a smaller one with a drip system on it for coffee, tea, or hot chocolate.It would need a pressure release for the steam.

    By DragonSpeak707UTube on May 31, 2012

  23. Impressive! A slightly modified version of that can be used to boil a good amount water without the use of lenses and reflectors!! Now that’s something to ponder about.

    By AlbertLloydy on May 31, 2012

  24.  what is the cost of 1 tube

    By csxconductor100 on May 31, 2012

  25. Ahhhh, nothing like a nice glass of boiling water to quench the thirst.

    By bnewton81 on May 31, 2012

  26. Not only insulating properties over-night, but it has the ability to collect heat from the sunlight that bounces off of the clouds. It does not have to be in direct sun. I had, the one that was loaned to me, on the front porch and it generated heat, even in the shade.

    By SSparks555 on May 31, 2012

  27. Where did you get that tube? I really really REALLY want to know.
    Kyle Glenn

    By KyleWGlenn on May 31, 2012

  28. Would have been nice if you had thrown a thermometer in there for some hard data… Vac tubes are Awesome!

    By lefty0mtl on May 31, 2012

  29. I want some of those and I don’t even own a house =)

    Very cool! Or hot… I like it!

    By SixCards54 on May 31, 2012

  30. If the industry was smart they would use these to bring ethanol to temp for gassing off to recollect. This would eliminate the energy used to gas off ethanol (180f) thus lowering operating costs of the ethanol plant.Resulting in a cheaper product for the people.

    By bluejay331 on May 31, 2012

  31. If the industry was smart they would use these to bring ethanol to temp for gassing off to recollect. This would eliminate the energy used to gas off ethanol (180f) thus lowering operating costs of the ethanol plant.Resulting in a cheaper product for the people.

    By bluejay331 on May 31, 2012

  32. Dan, Keep up the good work. I was going to try one of these tubes in a trough last year, but the price was a little high for me at the time. I started a true parabolic trough last year, but a hernia brought me down for a long while. I am eager to see how it works for you and I can learn from your testing. Thanks for youe efforts!

    By HTTAPBIH on May 31, 2012

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